Mark the editbox as multi-line so the return key is always visible

Fixes https://github.com/libsdl-org/SDL/issues/6170

android-project/app/src/main/java/org/libsdl/app/SDLActivity.java

@@ -207,7 +207,7 @@ public class SDLActivity extends Activity implements View.OnSystemUiVisibilityCh
     // Main components
     protected static SDLActivity mSingleton;
     protected static SDLSurface mSurface;
-    protected static View mTextEdit;
+    protected static DummyEdit mTextEdit;
     protected static boolean mScreenKeyboardShown;
     protected static ViewGroup mLayout;
     protected static SDLClipboardHandler mClipboardHandler;
@@ -1865,9 +1865,10 @@ class DummyEdit extends View implements View.OnKeyListener {
     public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
         ic = new SDLInputConnection(this, true);
 
-        outAttrs.inputType = InputType.TYPE_CLASS_TEXT;
-        outAttrs.imeOptions = EditorInfo.IME_FLAG_NO_EXTRACT_UI
-                | EditorInfo.IME_FLAG_NO_FULLSCREEN /* API 11 */;
+        outAttrs.inputType = InputType.TYPE_CLASS_TEXT |
+                             InputType.TYPE_TEXT_FLAG_MULTI_LINE;
+        outAttrs.imeOptions = EditorInfo.IME_FLAG_NO_EXTRACT_UI |
+                              EditorInfo.IME_FLAG_NO_FULLSCREEN /* API 11 */;
 
         return ic;
     }